diff --git a/doc/error_codes.md b/doc/error_codes.md
index 008d4a1abe2979afbce5ce35f9d61b6f55c9200d..e127e7d6e7d85f9ffa9bd7207446dfd8b22add99 100644
--- a/doc/error_codes.md
+++ b/doc/error_codes.md
@@ -17,5 +17,3 @@
 * 57: Could not write to file
 * 57: Could not delete directory
 * 59: Could not delete file
-
-* 99: Error code reserved for actions that should never happen